Tom mitchell



T. MITCHELL. Spinning-Machine.

No. 223,748. Patented Jam-20,1880.

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TOM MITCHELL, OF BRADFORD, COUNTY OF YORK, GREAT BRITAIN.

SPINNING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 223,748, dated January 20, 1880.

Application filed October 2, 1879.

To all whom it may concern Be it known that I, TOM lVIITGHELL, of Bradford, in the county of York, in the Kin gdom of Great Britain and Ireland, have invented a new and useful Improvement in Spinning-Machines, of which the following is a specification.

The object of this invention is to prevent waste and twofold yarn when the end breaks and my improvement consists of the combination, with rolls, spinningspindle, and operating mechanism, of a balanced lever acted on by the yarn, a toothed wheel geared with a wheel or pulley flange carrying the bobbin, so as on the fall of the lever to effectually stop the roving-bobbin the same instant the end or thread of yarn breaks, as more fully described hereinafter, so that no waste or twofold yarn can possibly take place, and thus the yarn can be guarantied against the serious defects arising from doubling of yarn.

In the accompanying drawings, Figure 1 is an end sectional elevation of one side of a spinning-frame, showin gthe arrangement by which I stop the roving-bobbin by bevel-gear. Fig. 2 is an enlarged section through a roving-bobbin flangeplate and box containing bevelwheels. Fig. 3 is a view of a modification.

To the roving-boards B, at the top and at each side of the frame A of the spinning-inachine, I secure a box, 0, opposite to each spindle. Through the center of each of these boxes 0 passes a rowing-peg, D, and over each peg, near its lower end, fits a bevel-wheel, E, which is secured to flange-plate F, these wheels and flange-plates being free to revolve on pegs D.

On each flange-plate is one or more pins, G, which fit into corresponding holes in the flange H of the roving-bobbin.

The roving-thread J is conducted between the back rollers, K, carriers L, and front rollers, M, to which motion is imparted in the same manner as in ordinary spinning-framesl After each yarn J passes from between the front rollers, M, it is conducted through an eye formed in one end of a balanced lever, N, and thence to the bobbin on the revolving spindle 0. These levers N, as many in numher as there are spindles, are pivoted to brackets Q, secured to the top rail, P, of the frame.

turnin g Wit-h the bobbin.

In a slot in the light end of each balanced lever N is secured a weight, N, so as to be adjustable to accommodate the balance of the lever to the weight and the drag required to spin the yarn.

Thus it will be seen that by the rollers and carriers drawing the roving-threads toward the spindles, the rovingbobbins, diagonal shafts S, and wheels will revolve, and when any of the threads of yarn break the drag on the eye end of the lever N is released, the lever end at N will fall toward the bevel catchwheel B, and the catch-pin will stop the re volving wheel B and prevent the roving-bobbin connected therewith delivering a supply of roving-thread J to the front rollers, and thus prevent waste and twofold yarn.

In the modification shown in Fig, 3 I substitute for the bevel-wheel R and the devices for gearing it with the flange carrying the bobbin a toothed pulley, R, geared by a band, S, with the flan ge-plate F, provided with a groove for the said band. By this means the drag of the roving-thread J causes the catch-wheels to revolve, and when any of the threads of yarn break the catch-pin end of the balanced lever N will fall and stop the catch-wheel R and roving-bobbin connected therewith, and thus stop the supply of roving-thread J to the rollers and prevent waste and twofold yarn.

I am aware that in the English Patent No. 580 of 1855 there is shown a method of stopping the rotation of a yarn-bobbin by a balanced lever, one end or which enters a stop on the said bobbin when the yarn breaks, or on a reciprocating toothed bar 5 but this arrangement necessitates the use of a balanced lever of inconvenient length in spinning-machines. L

By the present invention the sfigt-motion is made more certain in its action by constructing the balance-lever to act on a toothed wheel geared with the said toothed wheel, all sub- 0 geared with a wheel attached to or forming stantially as described.

part of the flange-plate carrying the bobbin. In testimony whereof I have signed my I claim as my inventionname to this specification in the presence of The combination of the ro1ls,spinning-spintwo subscribing witnesses.

dle, and operating mechanism with a balanced TOM MITCHELL.

lever, N, a toothed wheel, and a flange-plate Witnesses:

adapted to carry the bobbin and having a JOHN GILL,

wheel secured to or forming part thereof, and TOM PITTS. 

